1 /* $NetBSD: efifdt.c,v 1.38 2024/12/07 19:29:04 jmcneill Exp $ */ 2 3 /*- 4 * Copyright (c) 2019 Jason R. Thorpe 5 * Copyright (c) 2018 Jared McNeill <jmcneill (at) invisible.ca> 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #include "efiboot.h" 31 #include "efifdt.h" 32 #include "efiblock.h" 33 #include "overlay.h" 34 #include "module.h" 35 36 #ifdef EFIBOOT_ACPI 37 #include "efiacpi.h" 38 #endif 39 40 #include <libfdt.h> 41 42 #define FDT_TABLE_GUID \ 43 { 0xb1b621d5, 0xf19c, 0x41a5, { 0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0 } } 44 static EFI_GUID FdtTableGuid = FDT_TABLE_GUID; 45 46 #define FDT_MEMORY_NODE_PATH "/memory" 47 #define FDT_MEMORY_NODE_NAME "memory" 48 #define FDT_CHOSEN_NODE_PATH "/chosen" 49 #define FDT_CHOSEN_NODE_NAME "chosen" 50 51 #define FDT_MEMORY_USABLE(_md) \ 52 ((_md)->Type == EfiLoaderCode || (_md)->Type == EfiLoaderData || \ 53 (_md)->Type == EfiBootServicesCode || (_md)->Type == EfiBootServicesData || \ 54 (_md)->Type == EfiConventionalMemory) 55 56 #define FDT_SPACE (4 * 1024 * 1024) 57 #define FDT_ALIGN (2 * 1024 * 1024) 58 59 #ifdef _LP64 60 #define PRIdUINTN "ld" 61 #define PRIxUINTN "lx" 62 #else 63 #define PRIdUINTN "d" 64 #define PRIxUINTN "x" 65 #endif 66 static void *fdt_data = NULL; 67 static size_t fdt_data_size = 512*1024; 68 69 static EFI_PHYSICAL_ADDRESS initrd_addr, dtb_addr, rndseed_addr; 70 static u_long initrd_size = 0, dtb_size = 0, rndseed_size = 0; 71 72 /* exec.c */ 73 extern EFI_PHYSICAL_ADDRESS efirng_addr; 74 extern u_long efirng_size; 75 76 #ifdef EFIBOOT_ACPI 77 #define ACPI_FDT_SIZE (128 * 1024) 78 static int efi_fdt_create_acpifdt(void); 79 #endif 80 81 int 82 efi_fdt_probe(void) 83 { 84 EFI_STATUS status; 85 86 status = LibGetSystemConfigurationTable(&FdtTableGuid, &fdt_data); 87 if (EFI_ERROR(status)) 88 return EIO; 89 90 if (fdt_check_header(fdt_data) != 0) { 91 fdt_data = NULL; 92 return EINVAL; 93 } 94 95 return 0; 96 } 97 98 int 99 efi_fdt_set_data(void *data) 100 { 101 int err; 102 103 if (fdt_check_header(data) != 0) 104 return EINVAL; 105 106 fdt_data = alloc(fdt_data_size); 107 if (fdt_data == NULL) 108 return ENOMEM; 109 memset(fdt_data, 0, fdt_data_size); 110 111 err = fdt_open_into(data, fdt_data, fdt_data_size); 112 if (err != 0) { 113 dealloc(fdt_data, fdt_data_size); 114 fdt_data = NULL; 115 return ENXIO; 116 } 117 118 return 0; 119 } 120 121 void * 122 efi_fdt_data(void) 123 { 124 return fdt_data; 125 } 126 127 int 128 efi_fdt_size(void) 129 { 130 return fdt_data == NULL ? 0 : fdt_totalsize(fdt_data); 131 } 132 133 bool 134 efi_fdt_overlay_is_compatible(void *dtbo) 135 { 136 const int system_root = fdt_path_offset(fdt_data, "/"); 137 const int overlay_root = fdt_path_offset(dtbo, "/"); 138 139 if (system_root < 0 || overlay_root < 0) 140 return false; 141 142 const int system_ncompat = fdt_stringlist_count(fdt_data, system_root, 143 "compatible"); 144 const int overlay_ncompat = fdt_stringlist_count(dtbo, overlay_root, 145 "compatible"); 146 147 if (system_ncompat <= 0 || overlay_ncompat <= 0) 148 return false; 149 150 const char *system_compatible, *overlay_compatible; 151 int si, oi; 152 153 for (si = 0; si < system_ncompat; si++) { 154 system_compatible = fdt_stringlist_get(fdt_data, 155 system_root, "compatible", si, NULL); 156 if (system_compatible == NULL) 157 continue; 158 for (oi = 0; oi < overlay_ncompat; oi++) { 159 overlay_compatible = fdt_stringlist_get(dtbo, 160 overlay_root, "compatible", oi, NULL); 161 if (overlay_compatible == NULL) 162 continue; 163 if (strcmp(system_compatible, overlay_compatible) == 0) 164 return true; 165 } 166 } 167 168 return false; 169 } 170 171 int 172 efi_fdt_overlay_apply(void *dtbo, int *fdterr) 173 { 174 int err = fdt_overlay_apply(fdt_data, dtbo); 175 if (fdterr) 176 *fdterr = err; 177 return err == 0 ? 0 : EIO; 178 } 179 180 void 181 efi_fdt_init(u_long addr, u_long len) 182 { 183 int error; 184 185 error = fdt_open_into(fdt_data, (void *)addr, len); 186 if (error < 0) 187 panic("fdt_open_into failed: %d", error); 188 189 fdt_data = (void *)addr; 190 } 191 192 void 193 efi_fdt_fini(void) 194 { 195 int error; 196 197 error = fdt_pack(fdt_data); 198 if (error < 0) 199 panic("fdt_pack failed: %d", error); 200 } 201 202 void 203 efi_fdt_show(void) 204 { 205 const char *model, *compat; 206 int n, ncompat; 207 208 if (fdt_data == NULL) { 209 return; 210 } 211 212 model = fdt_getprop(fdt_data, fdt_path_offset(fdt_data, "/"), "model", NULL); 213 if (model) { 214 command_printtab("FDT", "%s [", model); 215 } 216 ncompat = fdt_stringlist_count(fdt_data, fdt_path_offset(fdt_data, "/"), "compatible"); 217 for (n = 0; n < ncompat; n++) { 218 compat = fdt_stringlist_get(fdt_data, fdt_path_offset(fdt_data, "/"), 219 "compatible", n, NULL); 220 printf("%s%s", n == 0 ? "" : ", ", compat); 221 } 222 printf("]\n"); 223 } 224 225 static int 226 efi_fdt_chosen(void) 227 { 228 int chosen; 229 230 chosen = fdt_path_offset(fdt_data, FDT_CHOSEN_NODE_PATH); 231 if (chosen < 0) 232 chosen = fdt_add_subnode(fdt_data, 233 fdt_path_offset(fdt_data, "/"), 234 FDT_CHOSEN_NODE_NAME); 235 if (chosen < 0) 236 panic("FDT: Failed to create " FDT_CHOSEN_NODE_PATH " node"); 237 238 return chosen; 239 } 240 241 void 242 efi_fdt_system_table(void) 243 { 244 #ifdef EFIBOOT_RUNTIME_ADDRESS 245 int chosen; 246 247 chosen = efi_fdt_chosen(); 248 249 fdt_setprop_u64(fdt_data, chosen, "netbsd,uefi-system-table", (uint64_t)(uintptr_t)ST); 250 #endif 251 } 252 253 void 254 efi_fdt_memory_map(void) 255 { 256 UINTN nentries = 0, mapkey, descsize; 257 EFI_MEMORY_DESCRIPTOR *md, *memmap; 258 UINT32 descver; 259 UINT64 phys_start, phys_size; 260 int n, memory; 261 262 memory = fdt_path_offset(fdt_data, FDT_MEMORY_NODE_PATH); 263 if (memory < 0) 264 memory = fdt_add_subnode(fdt_data, fdt_path_offset(fdt_data, "/"), FDT_MEMORY_NODE_NAME); 265 if (memory < 0) 266 panic("FDT: Failed to create " FDT_MEMORY_NODE_PATH " node"); 267 268 fdt_delprop(fdt_data, memory, "reg"); 269 270 const int address_cells = fdt_address_cells(fdt_data, fdt_path_offset(fdt_data, "/")); 271 const int size_cells = fdt_size_cells(fdt_data, fdt_path_offset(fdt_data, "/")); 272 273 memmap = LibMemoryMap(&nentries, &mapkey, &descsize, &descver); 274 for (n = 0, md = memmap; n < nentries; n++, md = NextMemoryDescriptor(md, descsize)) { 275 /* 276 * create / find the chosen node for each iteration as it might have changed 277 * when adding to the memory node 278 */ 279 int chosen = efi_fdt_chosen(); 280 fdt_appendprop_u32(fdt_data, chosen, "netbsd,uefi-memmap", md->Type); 281 fdt_appendprop_u64(fdt_data, chosen, "netbsd,uefi-memmap", md->PhysicalStart); 282 fdt_appendprop_u64(fdt_data, chosen, "netbsd,uefi-memmap", md->NumberOfPages); 283 fdt_appendprop_u64(fdt_data, chosen, "netbsd,uefi-memmap", md->Attribute); 284 285 if ((md->Attribute & EFI_MEMORY_RUNTIME) != 0) 286 continue; 287 288 if ((md->Attribute & EFI_MEMORY_WB) == 0) 289 continue; 290 if (!FDT_MEMORY_USABLE(md)) 291 continue; 292 if ((address_cells == 1 || size_cells == 1) && md->PhysicalStart + (md->NumberOfPages * EFI_PAGE_SIZE) > 0xffffffff) 293 continue; 294 if (md->NumberOfPages <= 1) 295 continue; 296 297 phys_start = md->PhysicalStart; 298 phys_size = md->NumberOfPages * EFI_PAGE_SIZE; 299 300 if (phys_start & EFI_PAGE_MASK) { 301 /* 302 * UEFI spec says these should be 4KB aligned, but 303 * U-Boot doesn't always, so round up to the next 304 * page. 305 */ 306 phys_start = (phys_start + EFI_PAGE_SIZE) & ~EFI_PAGE_MASK; 307 phys_size -= (EFI_PAGE_SIZE * 2); 308 if (phys_size == 0) 309 continue; 310 } 311 312 memory = fdt_path_offset(fdt_data, FDT_MEMORY_NODE_PATH); 313 if (address_cells == 1) 314 fdt_appendprop_u32(fdt_data, memory, "reg", 315 (uint32_t)phys_start); 316 else 317 fdt_appendprop_u64(fdt_data, memory, "reg", 318 phys_start); 319 320 if (size_cells == 1) 321 fdt_appendprop_u32(fdt_data, memory, "reg", 322 (uint32_t)phys_size); 323 else 324 fdt_appendprop_u64(fdt_data, memory, "reg", 325 phys_size); 326 } 327 } 328 329 void 330 efi_fdt_gop(void) 331 { 332 EFI_STATUS status; 333 EFI_GRAPHICS_OUTPUT_PROTOCOL *gop; 334 EFI_GRAPHICS_OUTPUT_PROTOCOL_MODE *mode; 335 EFI_HANDLE *gop_handle; 336 UINTN ngop_handle, n; 337 char buf[48]; 338 int fb, chosen; 339 340 status = LibLocateHandle(ByProtocol, &GraphicsOutputProtocol, NULL, &ngop_handle, &gop_handle); 341 if (EFI_ERROR(status) || ngop_handle == 0) 342 return; 343 344 for (n = 0; n < ngop_handle; n++) { 345 status = uefi_call_wrapper(BS->HandleProtocol, 3, gop_handle[n], &GraphicsOutputProtocol, (void **)&gop); 346 if (EFI_ERROR(status)) 347 continue; 348 349 mode = gop->Mode; 350 if (mode == NULL) 351 continue; 352 353 #ifdef EFIBOOT_DEBUG 354 printf("GOP: FB @ 0x%" PRIx64 " size 0x%" PRIxUINTN "\n", mode->FrameBufferBase, mode->FrameBufferSize); 355 printf("GOP: Version %d\n", mode->Info->Version); 356 printf("GOP: HRes %d VRes %d\n", mode->Info->HorizontalResolution, mode->Info->VerticalResolution); 357 printf("GOP: PixelFormat %d\n", mode->Info->PixelFormat); 358 printf("GOP: PixelBitmask R 0x%x G 0x%x B 0x%x Res 0x%x\n", 359 mode->Info->PixelInformation.RedMask, 360 mode->Info->PixelInformation.GreenMask, 361 mode->Info->PixelInformation.BlueMask, 362 mode->Info->PixelInformation.ReservedMask); 363 printf("GOP: Pixels per scanline %d\n", mode->Info->PixelsPerScanLine); 364 #endif 365 366 if (mode->Info->PixelFormat == PixelBltOnly) { 367 printf("GOP: PixelBltOnly pixel format not supported\n"); 368 continue; 369 } 370 371 chosen = efi_fdt_chosen(); 372 fdt_setprop_u32(fdt_data, chosen, "#address-cells", 2); 373 fdt_setprop_u32(fdt_data, chosen, "#size-cells", 2); 374 fdt_setprop_empty(fdt_data, chosen, "ranges"); 375 376 snprintf(buf, sizeof(buf), "framebuffer@%" PRIx64, mode->FrameBufferBase); 377 fb = fdt_add_subnode(fdt_data, chosen, buf); 378 if (fb < 0) { 379 /* Framebuffer node already exists. No need to create a new one! */ 380 return; 381 } 382 383 fdt_appendprop_string(fdt_data, fb, "compatible", "simple-framebuffer"); 384 fdt_appendprop_string(fdt_data, fb, "status", "okay"); 385 fdt_appendprop_u64(fdt_data, fb, "reg", mode->FrameBufferBase); 386 fdt_appendprop_u64(fdt_data, fb, "reg", mode->FrameBufferSize); 387 fdt_appendprop_u32(fdt_data, fb, "width", mode->Info->HorizontalResolution); 388 fdt_appendprop_u32(fdt_data, fb, "height", mode->Info->VerticalResolution); 389 fdt_appendprop_u32(fdt_data, fb, "stride", mode->Info->PixelsPerScanLine * 4); /* XXX */ 390 fdt_appendprop_string(fdt_data, fb, "format", "a8b8g8r8"); 391 392 #ifdef EFIBOOT_ACPI 393 /* 394 * In ACPI mode, use GOP as console. 395 */ 396 if (efi_acpi_available()) { 397 snprintf(buf, sizeof(buf), "/chosen/framebuffer@%" PRIx64, mode->FrameBufferBase); 398 fdt_setprop_string(fdt_data, chosen, "stdout-path", buf); 399 } 400 #endif 401 402 return; 403 } 404 } 405 406 void 407 efi_fdt_bootargs(const char *bootargs) 408 { 409 struct efi_block_part *bpart = efi_block_boot_part(); 410 uint8_t macaddr[6]; 411 int chosen; 412 413 chosen = efi_fdt_chosen(); 414 415 if (*bootargs) 416 fdt_setprop_string(fdt_data, chosen, "bootargs", bootargs); 417 418 if (bpart) { 419 switch (bpart->type) { 420 case EFI_BLOCK_PART_DISKLABEL: 421 fdt_setprop(fdt_data, chosen, "netbsd,mbr", 422 bpart->hash, sizeof(bpart->hash)); 423 fdt_setprop_u32(fdt_data, chosen, "netbsd,partition", 424 bpart->index); 425 break; 426 case EFI_BLOCK_PART_GPT: 427 if (bpart->gpt.ent.ent_name[0] == 0x0000) { 428 fdt_setprop(fdt_data, chosen, "netbsd,gpt-guid", 429 bpart->hash, sizeof(bpart->hash)); 430 } else { 431 char *label = NULL; 432 int rv = ucs2_to_utf8(bpart->gpt.ent.ent_name, &label); 433 if (rv == 0) { 434 fdt_setprop_string(fdt_data, chosen, "netbsd,gpt-label", label); 435 FreePool(label); 436 } 437 } 438 break; 439 default: 440 break; 441 } 442 } else if (efi_net_get_booted_macaddr(macaddr) == 0) { 443 fdt_setprop(fdt_data, chosen, "netbsd,booted-mac-address", macaddr, sizeof(macaddr)); 444 } 445 } 446 447 static void 448 efi_fdt_userconf_addprop(const char *cmd) 449 { 450 const int chosen = efi_fdt_chosen(); 451 452 fdt_appendprop_string(fdt_data, chosen, "netbsd,userconf", cmd); 453 } 454 455 void 456 efi_fdt_userconf(void) 457 { 458 userconf_foreach(efi_fdt_userconf_addprop); 459 } 460 461 void 462 efi_fdt_initrd(u_long initrd_addr, u_long initrd_size) 463 { 464 int chosen; 465 466 if (initrd_size == 0) 467 return; 468 469 chosen = efi_fdt_chosen(); 470 fdt_setprop_u64(fdt_data, chosen, "linux,initrd-start", initrd_addr); 471 fdt_setprop_u64(fdt_data, chosen, "linux,initrd-end", initrd_addr + initrd_size); 472 } 473 474 /* pass in the NetBSD on-disk random seed */ 475 void 476 efi_fdt_rndseed(u_long addr, u_long size) 477 { 478 int chosen; 479 480 if (size == 0) 481 return; 482 483 chosen = efi_fdt_chosen(); 484 fdt_setprop_u64(fdt_data, chosen, "netbsd,rndseed-start", addr); 485 fdt_setprop_u64(fdt_data, chosen, "netbsd,rndseed-end", addr + size); 486 } 487 488 /* pass in output from the EFI firmware's RNG from some unknown source */ 489 void 490 efi_fdt_efirng(u_long efirng_addr, u_long efirng_size) 491 { 492 int chosen; 493 494 if (efirng_size == 0) 495 return; 496 497 chosen = efi_fdt_chosen(); 498 fdt_setprop_u64(fdt_data, chosen, "netbsd,efirng-start", 499 efirng_addr); 500 fdt_setprop_u64(fdt_data, chosen, "netbsd,efirng-end", 501 efirng_addr + efirng_size); 502 } 503 504 /* pass in module information */ 505 void 506 efi_fdt_module(const char *module_name, u_long module_addr, u_long module_size) 507 { 508 int chosen; 509 510 if (module_size == 0) 511 return; 512 513 chosen = efi_fdt_chosen(); 514 fdt_appendprop_string(fdt_data, chosen, "netbsd,module-names", module_name); 515 fdt_appendprop_u64(fdt_data, chosen, "netbsd,modules", module_addr); 516 fdt_appendprop_u64(fdt_data, chosen, "netbsd,modules", module_size); 517 } 518 519 static void 520 apply_overlay(const char *path, void *dtbo) 521 { 522 523 if (!efi_fdt_overlay_is_compatible(dtbo)) { 524 printf("boot: %s: incompatible overlay\n", path); 525 return; 526 } 527 528 int fdterr; 529 530 if (efi_fdt_overlay_apply(dtbo, &fdterr) != 0) { 531 printf("boot: %s: error %d applying overlay\n", path, fdterr); 532 } 533 } 534 535 static void 536 apply_overlay_file(const char *path) 537 { 538 EFI_PHYSICAL_ADDRESS dtbo_addr; 539 u_long dtbo_size; 540 541 if (strlen(path) == 0) 542 return; 543 544 if (load_file(path, 0, false, &dtbo_addr, &dtbo_size) != 0 || 545 dtbo_addr == 0) { 546 /* Error messages have already been displayed. */ 547 goto out; 548 } 549 550 apply_overlay(path, (void *)(uintptr_t)dtbo_addr); 551 552 out: 553 if (dtbo_addr) { 554 uefi_call_wrapper(BS->FreePages, 2, dtbo_addr, 555 EFI_SIZE_TO_PAGES(dtbo_size)); 556 } 557 } 558 559 static void 560 load_fdt_overlays(void) 561 { 562 if (!dtoverlay_enabled) 563 return; 564 565 dtoverlay_foreach(apply_overlay_file); 566 } 567 568 static void 569 load_module(const char *module_name) 570 { 571 EFI_PHYSICAL_ADDRESS addr; 572 u_long size; 573 char path[PATH_MAX]; 574 575 snprintf(path, sizeof(path), "%s/%s/%s.kmod", module_prefix, 576 module_name, module_name); 577 578 if (load_file(path, 0, false, &addr, &size) != 0 || addr == 0 || size == 0) 579 return; 580 581 efi_fdt_module(module_name, (u_long)addr, size); 582 } 583 584 static void 585 load_modules(const char *kernel_name) 586 { 587 if (!module_enabled) 588 return; 589 590 module_init(kernel_name); 591 module_foreach(load_module); 592 } 593 594 595 /* 596 * Prepare kernel arguments and shutdown boot services. 597 */ 598 int 599 efi_fdt_prepare_boot(const char *fname, const char *args, u_long *marks) 600 { 601 int error; 602 603 load_file(get_initrd_path(), 0, false, &initrd_addr, &initrd_size); 604 load_file(get_dtb_path(), 0, false, &dtb_addr, &dtb_size); 605 606 error = efi_md_prepare_boot(fname, args, marks); 607 if (error) { 608 return error; 609 } 610 #ifdef EFIBOOT_ACPI 611 /* ACPI support only works for little endian kernels */ 612 if (efi_acpi_available() && netbsd_elf_data == ELFDATA2LSB) { 613 error = efi_fdt_create_acpifdt(); 614 if (error != 0) { 615 return error; 616 } 617 } else 618 #endif 619 if (dtb_addr && efi_fdt_set_data((void *)(uintptr_t)dtb_addr) != 0) { 620 return EINVAL; 621 } 622 623 if (efi_fdt_size() > 0) { 624 /* 625 * Load the rndseed as late as possible -- after we 626 * have committed to using fdt and executing this 627 * kernel -- so that it doesn't hang around in memory 628 * if we have to bail or the kernel won't use it. 629 */ 630 load_file(get_rndseed_path(), 0, false, 631 &rndseed_addr, &rndseed_size); 632 633 efi_fdt_init((marks[MARK_END] + FDT_ALIGN - 1) & -FDT_ALIGN, FDT_ALIGN); 634 load_modules(fname); 635 load_fdt_overlays(); 636 efi_fdt_initrd(initrd_addr, initrd_size); 637 efi_fdt_rndseed(rndseed_addr, rndseed_size); 638 efi_fdt_efirng(efirng_addr, efirng_size); 639 efi_fdt_bootargs(args); 640 efi_fdt_userconf(); 641 efi_fdt_system_table(); 642 efi_fdt_gop(); 643 efi_fdt_memory_map(); 644 } 645 646 efi_cleanup(); 647 648 if (efi_fdt_size() > 0) { 649 efi_fdt_fini(); 650 } 651 652 return 0; 653 } 654 655 /* 656 * Free memory after a failed boot. 657 */ 658 void 659 efi_fdt_cleanup_boot(void) 660 { 661 if (rndseed_addr) { 662 uefi_call_wrapper(BS->FreePages, 2, rndseed_addr, EFI_SIZE_TO_PAGES(rndseed_size)); 663 rndseed_addr = 0; 664 rndseed_size = 0; 665 } 666 if (initrd_addr) { 667 uefi_call_wrapper(BS->FreePages, 2, initrd_addr, EFI_SIZE_TO_PAGES(initrd_size)); 668 initrd_addr = 0; 669 initrd_size = 0; 670 } 671 if (dtb_addr) { 672 uefi_call_wrapper(BS->FreePages, 2, dtb_addr, EFI_SIZE_TO_PAGES(dtb_size)); 673 dtb_addr = 0; 674 dtb_size = 0; 675 } 676 } 677 678 size_t 679 efi_fdt_alloc_size(void) 680 { 681 return FDT_SPACE; 682 } 683 684 #ifdef EFIBOOT_ACPI 685 int 686 efi_fdt_create_acpifdt(void) 687 { 688 void *acpi_root = efi_acpi_root(); 689 void *smbios_table = efi_acpi_smbios(); 690 void *fdt; 691 int error; 692 693 if (acpi_root == NULL) 694 return EINVAL; 695 696 fdt = AllocatePool(ACPI_FDT_SIZE); 697 if (fdt == NULL) 698 return ENOMEM; 699 700 error = fdt_create_empty_tree(fdt, ACPI_FDT_SIZE); 701 if (error) 702 return EIO; 703 704 const char *model = efi_acpi_get_model(); 705 706 fdt_setprop_string(fdt, fdt_path_offset(fdt, "/"), "compatible", "netbsd,generic-acpi"); 707 fdt_setprop_string(fdt, fdt_path_offset(fdt, "/"), "model", model); 708 fdt_setprop_cell(fdt, fdt_path_offset(fdt, "/"), "#address-cells", 2); 709 fdt_setprop_cell(fdt, fdt_path_offset(fdt, "/"), "#size-cells", 2); 710 711 fdt_add_subnode(fdt, fdt_path_offset(fdt, "/"), "chosen"); 712 fdt_setprop_u64(fdt, fdt_path_offset(fdt, "/chosen"), "netbsd,acpi-root-table", (uint64_t)(uintptr_t)acpi_root); 713 if (smbios_table) 714 fdt_setprop_u64(fdt, fdt_path_offset(fdt, "/chosen"), "netbsd,smbios-table", (uint64_t)(uintptr_t)smbios_table); 715 716 fdt_add_subnode(fdt, fdt_path_offset(fdt, "/"), "acpi"); 717 fdt_setprop_string(fdt, fdt_path_offset(fdt, "/acpi"), "compatible", "netbsd,acpi"); 718 719 return efi_fdt_set_data(fdt); 720 } 721 #endif 722 723 #ifdef EFIBOOT_RUNTIME_ADDRESS 724 static uint64_t 725 efi_fdt_runtime_alloc_va(uint64_t pa, uint64_t npages) 726 { 727 #if EFIBOOT_RUNTIME_ADDRESS != 0 728 static uint64_t va = EFIBOOT_RUNTIME_ADDRESS; 729 static uint64_t sz = EFIBOOT_RUNTIME_SIZE; 730 uint64_t nva; 731 732 if (sz < (npages * EFI_PAGE_SIZE)) { 733 panic("efi_acpi_alloc_va: couldn't allocate %" PRIu64 " pages", 734 npages); 735 } 736 737 nva = va; 738 va += (npages * EFI_PAGE_SIZE); 739 sz -= (npages * EFI_PAGE_SIZE); 740 741 return nva; 742 #else 743 return pa; 744 #endif 745 } 746 747 void 748 efi_fdt_set_virtual_address_map(EFI_MEMORY_DESCRIPTOR *memmap, UINTN nentries, 749 UINTN mapkey, UINTN descsize, UINT32 descver) 750 { 751 EFI_MEMORY_DESCRIPTOR *md, *vmd, *vmemmap; 752 EFI_STATUS status; 753 int n, nrt; 754 void *fdt; 755 756 fdt = efi_fdt_data(); 757 758 vmemmap = alloc(nentries * descsize); 759 if (vmemmap == NULL) 760 panic("FATAL: couldn't allocate virtual memory map"); 761 762 for (n = 0, nrt = 0, vmd = vmemmap, md = memmap; 763 n < nentries; 764 n++, md = NextMemoryDescriptor(md, descsize)) { 765 766 if ((md->Attribute & EFI_MEMORY_RUNTIME) == 0) { 767 continue; 768 } 769 770 md->VirtualStart = 771 efi_fdt_runtime_alloc_va(md->PhysicalStart, md->NumberOfPages); 772 773 switch (md->Type) { 774 case EfiRuntimeServicesCode: 775 fdt_appendprop_u64(fdt, fdt_path_offset(fdt, "/chosen"), 776 "netbsd,uefi-runtime-code", md->PhysicalStart); 777 fdt_appendprop_u64(fdt, fdt_path_offset(fdt, "/chosen"), 778 "netbsd,uefi-runtime-code", md->VirtualStart); 779 fdt_appendprop_u64(fdt, fdt_path_offset(fdt, "/chosen"), 780 "netbsd,uefi-runtime-code", 781 md->NumberOfPages * EFI_PAGE_SIZE); 782 break; 783 case EfiRuntimeServicesData: 784 fdt_appendprop_u64(fdt, fdt_path_offset(fdt, "/chosen"), 785 "netbsd,uefi-runtime-data", md->PhysicalStart); 786 fdt_appendprop_u64(fdt, fdt_path_offset(fdt, "/chosen"), 787 "netbsd,uefi-runtime-data", md->VirtualStart); 788 fdt_appendprop_u64(fdt, fdt_path_offset(fdt, "/chosen"), 789 "netbsd,uefi-runtime-data", 790 md->NumberOfPages * EFI_PAGE_SIZE); 791 break; 792 case EfiMemoryMappedIO: 793 fdt_appendprop_u64(fdt, fdt_path_offset(fdt, "/chosen"), 794 "netbsd,uefi-runtime-mmio", md->PhysicalStart); 795 fdt_appendprop_u64(fdt, fdt_path_offset(fdt, "/chosen"), 796 "netbsd,uefi-runtime-mmio", md->VirtualStart); 797 fdt_appendprop_u64(fdt, fdt_path_offset(fdt, "/chosen"), 798 "netbsd,uefi-runtime-mmio", 799 md->NumberOfPages * EFI_PAGE_SIZE); 800 break; 801 default: 802 break; 803 } 804 805 *vmd = *md; 806 vmd = NextMemoryDescriptor(vmd, descsize); 807 ++nrt; 808 } 809 810 status = uefi_call_wrapper(RT->SetVirtualAddressMap, 4, nrt * descsize, 811 descsize, descver, vmemmap); 812 if (EFI_ERROR(status)) { 813 printf("WARNING: SetVirtualAddressMap failed\n"); 814 return; 815 } 816 } 817 #endif 818
Indexes created Sat Sep 20 22:09:52 GMT 2025